Fault Domain Awareness with Zones

Understanding fault domains

Overview

A fault domain is a section of a network, for example, a rack in a datacenter or an entire datacenter, that is vulnerable to damage if a critical device or system fails. All instances within a fault domain share similar failure and latency characteristics. Instances in the same fault domain are all affected by failure events within the domain. Placing instances in more than one fault domain reduces the risk that a failure will affect all instances.

DC/OS now supports fault domain awareness. Use fault domain awareness to make your services highly available and to allow for increased capacity when needed.